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Texas Instruments TPS62050DGSRG4
- Part No.:
- TPS62050DGSRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TPS62050DGSRG4.pdf
- Description:
- IC REG BUCK ADJ 800MA 10VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,983
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Product details
Overview
TPS62050DGSRG4 from Texas Instruments is an adjustable-output, 800-mA synchronous step-down DC-DC converter optimized for battery-powered portable electronics. It operates from 2.7 V to 10 V input, delivers 0.7 V to 6 V output, achieves up to 95% efficiency, and features 12 µA typical quiescent current - enabling long runtime in handheld PDAs and low-power DSP supplies.
For engineers reviewing the TPS62050DGSRG4 datasheet, TPS62050DGSRG4 pinout, TPS62050DGSRG4 application, or TPS62050DGSRG4 equivalent, key selection criteria include its 850 kHz fixed-frequency PWM operation, power-save mode transition at ~100–200 mA load, 10-pin VSSOP (DGS) package with integrated N/P-channel MOSFETs, and support for external clock synchronization up to 1.2 MHz.
Technical Context
The TPS62050DGSRG4 implements voltage-mode control with input-voltage feedforward for fast line/load transient response using small ceramic capacitors. Its internal 850 kHz oscillator drives synchronous rectification, eliminating external diodes and improving efficiency across 10 mA–800 mA loads.
In power-save mode (SYNC = LOW), it switches to pulse-frequency modulation (PFM) with ~12 µA quiescent current and variable frequency; in forced-PWM mode (SYNC = HIGH), it maintains fixed 850 kHz operation with no discontinuous conduction, enabling predictable EMI filtering for noise-sensitive applications like digital cameras.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 800 mA maximum continuous - supports high-current rails for DSP cores or FPGA I/O banks without thermal derating under typical PCB layout. |
| Input Voltage Range | 2.7 V to 10 V - compatible with single/dual Li-ion, 3–5-cell alkaline/NiMH, and industrial 5 V/9 V supply rails. |
| Output Voltage Range | Adjustable 0.7 V to 6 V via external resistor divider - enables precise biasing of modern low-voltage logic (1.2 V, 1.8 V, 2.5 V, 3.3 V) and analog subsystems. |
| Quiescent Current | 12 µA typical in power-save mode - extends battery life in always-on monitoring circuits and sleep-state peripherals. |
| Switching Frequency | 850 kHz nominal (600–1200 kHz sync-capable) - allows use of compact 10 µH inductors and 10–22 µF ceramic output capacitors. |
| Efficiency Peak | Up to 95% at mid-load - minimizes thermal dissipation in space-constrained handheld enclosures. |
| Package | 10-pin VSSOP (DGS), 3.0 mm × 3.0 mm - surface-mount compatible with automated assembly and offers thermal resistance RθJA = 154 °C/W. |
Pinout & Package
TPS62050DGSRG4 uses a 10-pin Very Thin Shrink Small-Outline Package (VSSOP-DGS), 3.0 mm × 3.0 mm body size, with exposed thermal pad (PGND-connected) for enhanced heat dissipation in high-current operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Power input | Accepts 2.7–10 V DC; requires local 10 µF ceramic decoupling to suppress high-frequency switching noise. |
| LBO (Pin 2) | Open-drain low-battery output | Asserts logic-low when LBI voltage falls below 1.21 V ±1.5%; requires external pullup to VOUT or another rail ≤6 V. |
| GND (Pin 3) | Analog ground reference | Provides signal return for FB, PG, LBI; must be separated from PGND on PCB to avoid noise coupling into feedback path. |
| PG (Pin 4) | Open-drain power-good output | Floats high when VOUT ≥95% of nominal; requires external pullup to VOUT; valid only after 250 µs post-enable. |
| FB (Pin 5) | Feedback input | Connects to resistive divider for adjustable output; internal 0.5 V reference enables precise regulation across temperature. |
| LBI (Pin 6) | Low-battery input | Monitors battery voltage via external divider; trip point fixed at 1.21 V; hysteresis = 15 mV for stable threshold detection. |
| SYNC (Pin 7) | External clock sync input | Pull to GND for PFM/PWM auto-switching; pull >1.5 V for forced fixed-frequency PWM; accepts 600–1200 kHz square wave. |
| EN (Pin 8) | Enable control | Logic-high (>1.3 V) enables converter; logic-low (<0.3 V) reduces supply current to <2 µA; supports pushbutton interface. |
| SW (Pin 9) | Switch node | Drives external 10 µH inductor; carries high di/dt; requires tight layout and Kelvin connection to minimize EMI and voltage spikes. |
| PGND (Pin 10) | Power ground | Return path for high-current switch and inductor; must be connected directly to VIN capacitor ground and thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated N/P-channel MOSFETs | Eliminates external rectifier diode, reducing BOM count and board area while increasing efficiency by ~5–10% vs asynchronous designs. |
| 100% duty cycle capability | Enables ultra-low dropout operation (e.g., 3.3 V out from 3.6 V in), critical for maintaining regulation near battery end-of-life. |
| Internal soft-start | Digital ramp limits inrush current to prevent input rail collapse during startup; typical 1 ms rise time with 22 µF output cap and 200 mA load. |
| Overtemperature & overcurrent protection | Thermal shutdown at 145°C and cycle-by-cycle current limiting (1.0–1.4 A) ensure robust operation under fault conditions without external circuitry. |
| Low-noise forced-PWM mode | Fixed-frequency operation eliminates variable-frequency artifacts in audio/RF sections; avoids beat frequencies with system clocks. |
Applications
| Handheld PDAs & Organizers | Digital Cameras |
|---|---|
|
Use Scenario: Powering ARM9-based application processors and SRAM/SDRAM interfaces in palm-sized computing devices. IC Role / Device Role / Timing Role: Primary buck regulator delivering 1.2 V core and 3.3 V I/O rails with dynamic voltage scaling support. Use Value: 12 µA quiescent current extends standby time beyond 72 hours on dual AA alkaline cells; 850 kHz switching enables compact 3.0 mm × 3.0 mm layout footprint. |
Use Scenario: Supplying image sensor analog front-end (AFE), ISP core, and LCD backlight driver in consumer-grade digital still cameras. IC Role / Device Role / Timing Role: Dual-rail source: 2.5 V for sensor bias and 1.8 V for digital logic, synchronized to avoid interference with pixel readout timing. Use Value: 95% peak efficiency minimizes heat near optical modules; power-good flag ensures clean reset sequencing before sensor initialization. |
| Low-Power DSP Supplies | Cellular Phone Baseband |
|
Use Scenario: Providing regulated 1.5 V and 3.3 V supplies to TI C55x or ADI SHARC DSPs in portable medical monitors and audio analyzers. IC Role / Device Role / Timing Role: High-transient-response buck converter supporting rapid DSP clock gating and wake-from-sleep transitions. Use Value: Input-voltage feedforward control achieves <50 µs load-step recovery; adjustable output accommodates multiple DSP voltage requirements from one BOM part. |
Use Scenario: Generating 2.8 V RF transceiver bias and 1.2 V baseband processor core voltage in GSM/EDGE handsets operating from single Li-ion cell. IC Role / Device Role / Timing Role: Main PMIC buck stage interfacing with battery fuel gauge and system power manager via EN and PG signals. Use Value: LBI/LBO monitoring integrates battery health reporting without external supervisor IC; 2.7 V minimum input sustains operation down to 3.0 V battery voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62051DGSR | Enhanced LBI comparator with 5 µA quiescent current in LBI-active standby; identical pinout and electrical specs otherwise. | Preferred where precise battery undervoltage shutdown is required without external SVS, e.g., medical wearables with strict battery cutoff. | Select TPS62051DGSR only if LBI-triggered enable/disable sequencing is needed; otherwise TPS62050DGSRG4 provides standard functionality at lower cost. |
| TPS62060DSGR | Higher 1.2 MHz switching frequency, 1.2 A output, smaller 6-pin WSON package; lacks LBI/LBO and PG pins. | Suitable for space-constrained designs needing higher current or faster transient response, but not for battery-monitoring systems. | Choose TPS62060DSGR when board area is critical and battery monitoring is handled elsewhere; TPS62050DGSRG4 retains full supervisory feature set in same DGS footprint. |
Compared with TPS62051DGSR, TPS62050DGSRG4 offers standard LBI functionality at lower standby current overhead for non-critical battery cutoff; versus TPS62060DSGR, it trades higher integration (LBO/PG/EN) for slightly larger package and lower max frequency - ideal for legacy-compatible, feature-complete portable power designs.
Availability
TPS62050DGSRG4 is available at Aetrix Electronics and suitable for handheld PDAs, digital cameras, and low-power DSP supplies requiring stable component supply, long-lifecycle availability, and consistent parametric performance across production batches.
Supply support for TPS62050DGSRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and power management ICs, with decades of expertise in high-efficiency DC-DC conversion for portable and industrial systems.
The TPS6205x product line was designed specifically for battery-powered portable electronics requiring high efficiency across wide load ranges, minimal external components, and integrated supervision features - targeting cellular phones, PDAs, and digital imaging equipment.
FAQ
What is the maximum output current capability of the TPS62050DGSRG4?
The TPS62050DGSRG4 delivers up to 800 mA of continuous output current under recommended operating conditions (TA = –40°C to 85°C, no thermal limitation). This rating assumes proper PCB layout with adequate copper pour on PGND and thermal pad, and use of a 10 µH inductor rated for ≥1.2 A saturation current. Peak switch current limit is 1.0–1.4 A, providing margin for transient loads.
Does the TPS62050DGSRG4 support adjustable output voltage?
Yes, the TPS62050DGSRG4 supports fully adjustable output voltage from 0.7 V to 6 V using an external resistor divider connected to the FB pin. The internal reference is 0.5 V, so R1/R2 ratio sets VOUT = 0.5 V × (1 + R1/R2). This flexibility allows precise tailoring for diverse SoC, FPGA, and sensor supply requirements without changing the BOM.
How does the SYNC pin affect operating mode in the TPS62050DGSRG4?
The SYNC pin configures the TPS62050DGSRG4's switching behavior: pulled low (GND) enables automatic PFM/PWM mode switching for highest light-load efficiency; pulled high (>1.5 V) forces fixed-frequency PWM operation for low-noise, predictable EMI performance. No external clock is required - internal 850 kHz oscillator operates by default when SYNC is left floating or tied to VI.
What is the purpose of the LBI and LBO pins on the TPS62050DGSRG4?
The LBI (Low-Battery Input) and LBO (Low-Battery Output) pins implement a programmable battery monitor. LBI accepts a scaled battery voltage; when it drops below 1.21 V ±1.5%, LBO asserts open-drain low. This enables system-level battery warning or graceful shutdown without external supervisor ICs - a key feature for handheld devices using single/dual Li-ion cells.
Is the TPS62050DGSRG4 pin-compatible with other devices in the TPS6205x family?
Yes, all TPS6205x variants - including TPS62050DGSRG4, TPS62051DGSR, TPS62052DGSR, TPS62054DGSR, and TPS62056DGSR - share identical 10-pin VSSOP (DGS) packaging and pinout. This allows drop-in replacement across adjustable and fixed-output versions (1.5 V, 1.8 V, 3.3 V), simplifying design reuse and inventory management while maintaining layout compatibility.
TPS62050DGSRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 0.7V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 800mA
- Frequency - Switching:
- 850kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSSOP
TPS62050DGSRG4 FAQ
1.How can I place an order for TPS62050DGSRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62050DGSRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS62050DGSRG4 reliable?
The price and inventory of TPS62050DGSRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62050DGSRG4 is usually 5 days.
3.What payment methods are accepted for TPS62050DGSRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62050DGSRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62050DGSRG4?
TPS62050DGSRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62050DGSRG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS62050DGSRG4?
For technical support, including TPS62050DGSRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62050DGSRG4 requirements.
6.How does Aetrix verify that TPS62050DGSRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62050DGSRG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS62050DGSRG4 meets industry standards.
7.What is the process for return or replacement of TPS62050DGSRG4?
All TPS62050DGSRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62050DGSRG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS62050DGSRG4 part is unused and in its original packaging.
Return procedure for TPS62050DGSRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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